Double-chip sweat sensor and preparation method thereof

Abstract

A double-chip sweat sensor, which comprises a carrier (1). A signal processing chip (2) and an electrode chip (3) are provided on the carrier (1); the electrode chip (3) is provided with a working electrode (31), a reference electrode (32), and external connection welding pads (33); the external connection welding pads (33) comprise a working electrode external connection welding pad and a reference electrode external connection welding pad; the working electrode (31) is connected to the working electrode external connection welding pad by means of a conducting circuit; the reference electrode (32) is connected to the reference electrode external connection welding pad by means of a conducting circuit; the external connection welding pads (33) are connected to a welding pad on the signal processing chip (2) by means of a lead bonding process; the other welding pad on the signal processing chip (2) is connected to a welding pad on the carrier (1) by means of a lead bonding process; the electrode chip (3) and the signal processing chip (2) are packaged on the carrier (1) by means of a packaging adhesive; the packaging adhesive is leaked out of the head part of the working electrode (31). A signal acquired by the working electrode (31) can be directly transmitted to the signal processing chip (2) by means of a lead bonding guide wire; the noise is low, and a function of detecting microconstituents in human sweat can be realized. Also provided is a producing method for the double-chip sweat sensor.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a double-chip sweat sensor and a preparation method thereof. Background technique [0002] Human sweat is mainly composed of 98-99% water (pH 4.2-7.5), sodium chloride (about 300mg / 100mL), and 1-2% other substances (including a small amount of urea, lactic acid, fatty acid, glucose, etc.). [0003] When the human body is exercising, a large amount of sweat will flow out. When the average Na content per liter of sweat is + Less than 58.4mg, K + Less than 10mg, Cl - When it is less than 45.4mg, the human body will have a series of problems, so that the human body is obviously allergic to visual and auditory stimuli, and the body's ability to regulate antibodies will also decrease, and symptoms such as muscle spasms, dehydration, and even coma will appear. Detecting the content of the above-mentioned ions in human sweat can give people early warning in time to avoid tragedy. At p...

AI Technical Summary

Problems solved by technology

[0003] When the human body is exercising, a large amount of sweat will flow out. When the average Na content per liter of sweat is + Less than 58.4mg, K + Less than 10mg, Cl - When it is less than 45.4mg, the human body will have a series of problems, so that the human body is obviously allergic to visual and auditory stimuli, and the body's ability to regulate antibodies will also decrease, and symptoms such as muscle spasms, dehydration, and even coma will appear. Detecting the content of the above-mentioned ions in human sweat can give people early warning in time to avoid tragedy. At present, there are no relevant sensors and equipment in the industry that can detect the content of trace components in human sweat in time.

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